[Unanswered]  Taking ownership of a used beylogger

Hello Bladers!

I need help on setup a used beylogger (not plus, the original) on which I recently bought it from a seller yesterday for cheap. Long story short, I already set up my account on the app and all, it's just that when i sync the used beylogger, it logs in the old user that's stored inside the beylogger instead of my account. Is there a way for me to take the ownership of the said beylogger and attach it to my account? Thanks!

PS : I've been searching for threads and instructions regarding this issue, but i can't find any.